Abstract: A heat transfer device includes a storage chamber, a coolant housed within the storage chamber, a cooling chamber, one or more heat transfer components, a fluid passage between the storage chamber and the cooling chamber, and a barrier element. The one or more heat transfer components facilitate heat transfer from a heat source outside of the cooling chamber to the cooling chamber. The barrier element may have (i) a closed configuration, and (ii) an open configuration in which the barrier element is configured to allow the coolant in the storage chamber to flow from the storage chamber into the cooling chamber. The barrier element may reconfigure from the closed configuration to the open configuration in response to a trigger condition, such as the coolant housed within the storage chamber reaching a trigger temperature and/or the initial pressure of the coolant housed within the storage chamber reaching a trigger pressure.

Abstract: Fluid apparatus and related methods are disclosed. An example fluid apparatus includes a body defining a fluid flow path between an inlet and an outlet. A flow control member is positioned in the fluid flow path. The flow control member has a base pivotally coupled to an inner wall of the body defining the fluid flow path. The flow control member has an annular tip that is to flex between an open position to allow fluid flow through the fluid flow path and a closed position to prevent fluid flow through the fluid flow path.

Abstract: Heat transfer devices, electronic devices, and methods for heat transfer with an external body. Heat transfer devices include a first disc, a second disc positioned adjacent to the first disc, and at least one spacer positioned between the first disc and the second disc. The first disc defines an aperture and comprises a pin cooling structure extending from around the aperture. The pin cooling structure comprises a distal end configured to facilitate heat exchange between the pin cooling structure and an external/adjacent/separate body and one or more side walls. At least one of the one or more side walls, the distal end, and the aperture at least partially define a pin volume. The second disc defines an inlet that is configured to (i) receive a fluid, and (ii) allow the fluid to flow from the inlet and into the pin volume.

Abstract: Aircraft fuselage apparatus having embedded structural batteries are disclosed. An example apparatus includes a fuselage having a wall. The wall has an outer surface, an inner surface, and a structural battery embedded in the wall between the outer surface and the inner surface.

Abstract: Embodiments of the present disclosure generally relate to heat transferring apparatuses and methods. The apparatus and methods utilize the Joule-Thomson effect to remove heat from a heat source to facilitate cooling of the heat source. In one example, an apparatus receives heat from an object to be cooled. The received heat is used to pressurize a fluid. The pressurized fluid is depressurized through a venturi using vapor pressure as a driving force, thus cooling the fluid.

Abstract: A method, for providing spatial stability and electrical power with a hybrid power source and control moment gyroscope (HPCMG), includes producing spatial stability force for the HPCMG by spinning a central mass within a first transverse gimbal assembly about a first axis of rotation of a control moment gyroscope (CMG). The CMG includes the first transverse gimbal assembly, the central mass, and a second gimbal assembly rotationally connected to the first transverse gimbal assembly. The first transverse gimbal assembly is rotationally connected to the central mass at a first position of the first transverse gimbal assembly and at a second position of the first transverse gimbal assembly along the first axis of rotation. The method includes producing a voltage potential with the central mass. The method includes charging or discharging the central mass through conductive bearings.

Abstract: Fluid apparatus and related methods are disclosed. An example fluid apparatus includes a body defining a fluid flow path between an inlet and an outlet. A flow control member is positioned in the fluid flow path. The flow control member has a base pivotally coupled to an inner wall of the body defining the fluid flow path. The flow control member has an annular tip that is to flex between an open position to allow fluid flow through the fluid flow path and a closed position to prevent fluid flow through the fluid flow path.

Abstract: Example implementations relate to Additive Manufacturing (AM) pressurization diffusers. An example diffuser includes an integral component configurable for receiving and diffusing pressurant. Particularly, the integral component includes multiple elements manufactured as a single-piece structure, including an inner filter, outer shell, and flange. The inner filter includes micro-diamond holes that enable pressurant received at an opening of the inner filter to diffuse out of the inner filter and subsequently through holes positioned in a shell surface of the outer shell. The flange can position the diffuser such that the opening of the inner filter is in pressurant communication with a pressurant source (e.g., opening of a tank) enabling the diffuser to receive and diffuse pressurant in a predefined pattern.

Abstract: Heat transfer devices and methods for enclosing a heat source and facilitating convective heat transfer from the heat source. A heat transfer device includes an outer wall having an outer surface exposed to an environment of the heat transfer device and defining an outer shape of the heat transfer device, and an inner wall defining a flow passage through the heat transfer device. The outer wall and the inner wall collectively define an internal volume that is configured to house the heat source. The flow passage includes an inlet configured to receive a fluid from the environment, and an outlet configured to exhaust the fluid from the flow passage that includes a core region extending between the inlet and the outlet and configured to deliver the fluid from the inlet to the outlet and allow heat to exchange between the fluid within the core region and the internal volume.

Abstract: Guide vane check valve assemblies and poppets for guide vane check valve assemblies are disclosed. A guide vane poppet includes an elongate central core configured to form a fluid seal with a valve body of the check valve assembly. The guide vane poppet additionally includes an elongate outer skirt and at least one guide vane radially extending between the elongate central core and the elongate outer skirt. A check valve assembly includes a valve body with a central cavity, an inlet to the central cavity, an outlet from the central cavity, and a spring seat, and further includes a spring and a poppet. The spring is oriented to press against the poppet and to urge a poppet-side sealing surface of the poppet into sealing engagement with a body-side sealing surface of the valve body.

Abstract: Guide vane check valve assemblies and poppets for guide vane check valve assemblies are disclosed. A guide vane poppet includes an elongate central core configured to form a fluid seal with a valve body of the check valve assembly. The guide vane poppet additionally includes an elongate outer skirt and at least one guide vane radially extending between the elongate central core and the elongate outer skirt. A check valve assembly includes a valve body with a central cavity, an inlet to the central cavity, an outlet from the central cavity, and a spring seat, and further includes a spring and a poppet. The spring is oriented to press against the poppet and to urge a poppet-side sealing surface of the poppet into sealing engagement with a body-side sealing surface of the valve body.

Abstract: Example implementations relate to Additive Manufacturing (AM) pressurization diffusers. An example diffuser includes an integral component configurable for receiving and diffusing pressurant. Particularly, the integral component includes multiple elements manufactured as a single-piece structure, including an inner filter, outer shell, and flange. The inner filter includes micro-diamond holes that enable pressurant received at an opening of the inner filter to diffuse out of the inner filter and subsequently through holes positioned in a shell surface of the outer shell. The flange can position the diffuser such that the opening of the inner filter is in pressurant communication with a pressurant source (e.g., opening of a tank) enabling the diffuser to receive and diffuse pressurant in a predefined pattern.

Abstract: A grid stiffened structure which includes a wall which extends in a direction transverse relative to a plane and an elongated rib connected along an elongated dimension of the rib to the wall such that the elongated rib extends along the wall and forms an angle with an axis which extends in a direction perpendicular to the plane. The elongated rib defines a free sidewall which extends from the wall positioned on a first side of the elongated rib and extends in a direction about the elongated rib and transverse to the elongated dimension to the wall positioned on a second side of the elongated rib. The wall and the elongated rib are constructed of a plurality of layers of material which extend in a direction transverse to the axis.

Abstract: Heat transfer devices and methods for enclosing a heat source and facilitating convective heat transfer from the heat source. A heat transfer device includes an outer wall having an outer surface exposed to an environment of the heat transfer device and defining an outer shape of the heat transfer device, and an inner wall defining a flow passage through the heat transfer device. The outer wall and the inner wall collectively define an internal volume that is configured to house the heat source. The flow passage comprises an inlet configured to receive a fluid from the environment, and an outlet configured to exhaust the fluid from the flow passage that comprises a core region extending between the inlet and the outlet and configured to deliver the fluid from the inlet to the outlet and allow heat to exchange between the fluid within the core region and the internal volume.

Abstract: Heat transfer devices, electronic devices, and methods for heat transfer with an external body. Heat transfer devices include a first disc, a second disc positioned adjacent to the first disc, and at least one spacer positioned between the first disc and the second disc. The first disc defines an aperture and comprises a pin cooling structure extending from around the aperture. The pin cooling structure comprises a distal end configured to facilitate heat exchange between the pin cooling structure and an external/adjacent/separate body and one or more side walls. At least one of the one or more side walls, the distal end, and the aperture at least partially define a pin volume. The second disc defines an inlet that is configured to (i) receive a fluid, and (ii) allow the fluid to flow from the inlet and into the pin volume.

Abstract: Sealing structures and valve assemblies including the sealing structures. The sealing structures include a first body, which defines a first surface. The sealing structures also include a second body, which defines a second surface. The second body also defines a gland, which extends into the second body from the second surface, defines a gland opening on the second surface, and is free of both a tool entry point and a tool exit point. The second body further defines a retention structure projecting partially across the gland. The sealing structure also includes a resilient sealing body positioned within the gland. The retention structure retains the resilient sealing body within the gland, and the resilient sealing body forms a fluid seal between the first body and the second body when the resilient sealing body is brought into pressing engagement with both the first surface and the gland.

Abstract: A heat transfer device includes a storage chamber, a coolant housed within the storage chamber, a cooling chamber, one or more heat transfer components, a fluid passage between the storage chamber and the cooling chamber, and a barrier element. The one or more heat transfer components facilitate heat transfer from a heat source outside of the cooling chamber to the cooling chamber. The barrier element may have (i) a closed configuration, and (ii) an open configuration in which the barrier element is configured to allow the coolant in the storage chamber to flow from the storage chamber into the cooling chamber. The barrier element may reconfigure from the closed configuration to the open configuration in response to a trigger condition, such as the coolant housed within the storage chamber reaching a trigger temperature; and/or the initial pressure of the coolant housed within the storage chamber reaching a trigger pressure.

Abstract: Guide vane check valves, guide vane check valve assemblies, and poppets for guide vane check valve assemblies are disclosed. A guide vane poppet includes an elongate central core configured to form a fluid seal with a valve body of the check valve assembly. The guide vane poppet additionally includes an elongate outer skirt and at least one guide vane radially extending between the elongate central core and the elongate outer skirt. A check valve assembly includes a valve body with a central cavity, an inlet to the central cavity, an outlet from the central cavity, and a spring seat, and further includes a spring and a poppet. The spring is oriented to press against the poppet and to urge a poppet-side sealing surface of the poppet into sealing engagement with a body-side sealing surface of the valve body.

Abstract: A method, for providing spatial stability and electrical power with a hybrid power source and control moment gyroscope (HPCMG), includes producing spatial stability force for the HPCMG by spinning a central mass within a first transverse gimbal assembly about a first axis of rotation of a control moment gyroscope (CMG). The CMG includes the first transverse gimbal assembly, the central mass, and a second gimbal assembly rotationally connected to the first transverse gimbal assembly. The first transverse gimbal assembly is rotationally connected to the central mass at a first position of the first transverse gimbal assembly and at a second position of the first transverse gimbal assembly along the first axis of rotation. The method includes producing a voltage potential with the central mass. The method includes charging or discharging the central mass through conductive bearings.

Abstract: Fluid apparatus and related methods are disclosed. An example fluid apparatus includes a housing defining a fluid flow passageway between an inlet and an outlet. The housing has a first valve seat and a second valve seat positioned in the fluid flow passageway. The first valve seat is spaced from the second valve seat. A flow control member is positioned in the fluid flow passageway. The flow control member has a first disk and a second disk. The first disk is to engage the first valve seat and the second disk to engage the second valve seat.